How to Remove Refrigerant From Car AC

Nowadays, most vehicles have air conditioning, which is a nice plus, as it keeps you cool in the heat. However, you don’t benefit if the temperature outside the window is strong. Therefore, most people believe that relying on car air conditioning is a given.

And if the car air conditioner breaks down and needs to be fixed, or the refrigerant needs to be changed. Before working on the air conditioner or changing the refrigerant, the old refrigerant must be replaced.

In this situation, it is called unloading the air conditioner. You may be curious if you should do it yourself at home and, if so, how. After reading this post, you will be able to understand how to unload your car’s air conditioner at home.

How to Remove Refrigerant From Car AC

The air conditioning device is integrated into the car and serves as a climate management technology. Isn’t it true that being in the passenger compartment will take your relaxation to new heights? However, corrections have to be made and sometimes the coolant has to be changed. Cars, believe it or not, are made for comfort and repair. And after five years, Freon has to be removed from the car’s air conditioning system. Please keep us posted on the progress of this procedure.

Step 1: First and foremost, locate the service (low pressure) port.

To remove the coolant safely, we need to use protective goggles and hand gloves. Well, this procedure will help you locate the service (low pressure) port. You must first prepare the recovery machine before connecting the repaired hose to the A/C low-pressure service port. Since the firewall locates the accumulator, you can conveniently locate the service port behind the refrigerant recovery machine service hose.

In short, the low-pressure port is conveniently located behind the compressor along with the low-pressure piping. The low-pressure piping is more conspicuous than the other pressure piping. In this way, the service terminal can be conveniently identified. The largest port is always the high-pressure port.

Step 2: Start the recovery machine and let it go.

Hopefully, you have connected the recovery machine to the AC service port using the first method. Steam and non-condensable gases in the AC device would be removed shortly after turning on the recovery pump. Remember that this step can only remove the (gas) form. However, several refrigerant fluids (liquids) remain in the AC device.

If allowed to spend more time in the device pressure, the liquid would be channeled into vapor. Now that the internal pressure has been reached, the refrigerant can be easily drained. Please note that the recovery machine can be shut down immediately until the operation is finished and the machine is idle.

Step 3: At last, disconnect the recovery machine from the AC

You have reached the end of the process and must drain the refrigerant from the car’s air conditioner. To do this, simply unplug the plug from the maintenance port. Close the service hose valve before detaching the unit from the service host. If R-134a Freon is used, the R-12 refrigerant must be easily disconnected by closing the hose valve. This stops the degradation of the AC refrigerant.

How To Remove Freon From Car At Home

To remove Freon at home, you will need an AC recovery machine. The AC recovery machine can recover and recycle the refrigerant material in the vehicle. When this machine recycles and removes the refrigerant, it is done.

First and foremost is safety. It is best to take proper safety precautions when removing Freon from a vehicle. Not just for this project. Any procedure on the car must be performed according to the correct safety steps.

  • Put on survival gloves and goggles before taking action.
  • Check the amount of Freon in the car (if possible).
  • During the operation, you will need the help of another person. Therefore, you can take this into account.
  • Since the removal of Freon from the car air conditioner, turn off the compressor.
  • If the car is not turned on, inspect it thoroughly.

Step 1: Locate the Low-Pressure Service Port.

The low-pressure inlet port is usually located in the large diameter air conditioning piping between the compressor and evaporator. The low-pressure side or low-pressure service port is usually protected by a black or blue plastic housing.

First, locate the compressor. The compressor is driven by the fan belt, which is located near the radiator at the front of the engine.

Next, follow the path from the A/C compressor to the evaporator. The evaporator is located behind the dashboard near the firewall. Often just below the windshield. The low-pressure service port is usually located on this pipe and is protected by a black or blue plastic cover that needs to be replaced.

Step 2: Start The Recovery Machine

Hopefully, find the low-pressure service port and connect the recovery machine to the A/C service port.

Run the recovery machine to remove the Freon vapor and non-condensable gas from the automotive air conditioner. However, some cooling fluids will still remain in liquid form. Allow some time for the recovery process to adjust to the appliance load, and then the machine’s pressure system will direct the liquid to vapor.

Step 3: Disconnect the Recovery Machine

The last step in removing Freon from the car air conditioner is to disconnect it from the service port and re-establish the connection to the machine.

Remember to close the valve on the server hose before disconnecting the recovery machine.

Some older models of recycling machines that are primarily used to remove R-12 Freon need to close the hose valve. However, for R-134a Freon, you will have a quick disassembly system to avoid a large loss of refrigerant.

What Should You Know to Release Freon From Car

Now you know how to remove Freon from a car. If you obey these basic instructions. Then getting rid of Freon will be child’s play.

Here are a few things to keep in mind:

  • If there is any Freon left in the air conditioner, don’t detach any hoses because Freon is harmful to both you and the climate.
  • In some states and countries, releasing Freon into the atmosphere without a valid excuse is illegal. You must dispose of Freon properly.
  • Any government needs an EPA certification before allowing Freon to be released from car air conditioners.

If your local statute requires a seal, you cannot uninstall Freon on your own. Above all, regulations must be followed.

Can You Remove Refrigerant From Your Car’s AC?

It is still essential to be accurate when drawing refrigerant from the air conditioner or charging refrigerant. Also, a small amount of extra refrigerant or alternating current can trigger major problems.

Therefore, be careful when using the automobile air conditioner.

Many scholars and expert auto mechanics discussed this topic extensively and provided various answers. So I will tell you what I have learned from my own practice. Let us explain.

If you are doing this for the first time, you can consult with a professional who usually does this work at home to extract the Freon from the engine. It is not at all ethical to extract refrigerant from car air conditioners because of the flammability issue and the obligation to the community. However, if you do something with a professional and feel safe and secure, you could do it in your own garage.

We can all be more cautious in our vehicles. If you are concerned about the safety of your vehicle, you should take it to a licensed garage or Freon removal contractor with a Freon removal permit. You can delegate the ultimate responsibility to experts for this.


What happens if I overfill my Freon?

Overcharging the appliance can cause the compressor, which is a refrigerant device, to fail permanently. In this situation, however, the device would shut down, must be restarted, and the overcharged refrigerant must be replaced before it can be turned back on.

How much does it cost to remove Freon from the car?

In most cases, the cost of replacing the Freon at the shop ranges from $180 to $260, and the Freon itself costs $50 to $120. The Freon in the air conditioner keeps the car cool and passengers safe when it is in operation. Freon must be replaced consistently and accurately.

How much Refrigerant does a car need?

Since the volume of AC coolant in the vehicle can vary, you should call the manufacturer or do a mechanical test to find out how much coolant the car needs. Each vehicle model requires a certain type and volume of refrigerant.

Most modern passenger car air conditioning systems do not carry a ton of refrigerant (refrigerant is a mere 14 to 28 ounces), so you do not want to use that much refrigerant if the unit is deficient. Also, if your vehicle’s air conditioner is completely normal, you should install a sufficient amount of refrigerant. R-134a reservoirs typically contain 12 ounces of refrigerant.

How Many Cans Does A Car Take To Be Recharged?

If it only blows cold air without air conditioning, it is suitable. R134A can be used if the vehicle is not too old. Do not purchase products that have a stop leak function.

This can cause the machine to clog so badly that you will need the services of a technician to repair the damage. Today, automotive production performance is so good that they only need a small amount of freon/coolant to keep the car cool. Keep in mind that even a small amount of Freon in a car’s contact device will trigger serious problems.

How long does it take for freon to settle in a car?

The location of the Freon in your car is determined by the amount of Freon in your vehicle. It can take up to 2 hours for a car with Freon to calm down. If the Freon level in the car is very low when you start adding Freon, the compressor may not start turning until the sensor detects that it has a fixed minimum volume of Freon. Add another 15 minutes for charging.

Can I use the same Freon in my car as well in my home?

You have already seen the difference in size between home air conditioners and car air conditioners. Depending on the size of the equipment, you may use R-22 or R-410a for your home air conditioner, or you may use more options.

Your car, on the other hand, will use R-12, Freeze-12, R-13a, or other forms of refrigerants or Freons. They are incompatible because of differences in their forms or characteristics. The key to not doing what you are doing is to mix these freons. Using the wrong Freon will cause significant damage to our home air conditioners and your vehicle.


Removing Freon from your car at home is not as difficult as you think. If you follow these steps, you can easily remove freon from the car air conditioner.

Therefore, I have always discussed using an AC recovery machine, keeping in mind the safety principles and following all the safety measures mentioned above, and all the steps to be followed to remove freon from the car.

We know that due to certain facts, it is difficult to find a Freon recovery machine. Many regions require certification to remove Freon from cars because they need to protect our environment and ensure that the process is carried out correctly.